Just can not work itself is lost this. Since the taper from end to apply a torque are given, there is no Abunage order to stop snugly in also some position insert the pipe.
As a dedicated jig will not beats.

Glasses we use in the place that can not be used. Nut, hard lick also multiplied by the torque and wide contact surface to the bolt. This (in a practical plane) pretty good quality for the price Nanoha is certainly.